RE: TV-7 tube tester line adjustment problem

Make sure you check your mains voltage first. I was helping a friend diagnose his TT-1 tester over the phone recently and come to find out his house mains had spiked to 128vac and caused his tester to not calibrate or line adjust.

The schematic looks like the tranny wants to see 93v after the line adjust.

This post is made possible by the generous
support of people like you and our sponsors: